Have you looked at the User Guide:
There appears to be some stuff about exporting documents there.
This discusses web services, though that might be for a more advanced version of the software:
Hope this helps...
I think they are going for a consistent look and feel that has contect-sensitivty built in. Searching from the home page searches the whole site, searching from the forum page searches the forums, etc. In some ways it feels likje a good idea, in other ways it feels confusing because it is hard to know the context.
We will see what searching in the new portal looks like in a few days...
Current search appears to work on subjects and content as far as I can tell (magnifying glass icon at top right).
A search by date range and user would be wonderful, though. Basically, it would be nice to have all the same search capabilities that other forums have...
The OP mentions subscriptions not copying over... That's fine, but will usernames fully transfer, along with stars? I don;t particularly care about my own stars, but it is a useful metric when seeing other people post to get a rough idea of product experience.